Micro and Macro Mixing

1. Front Matter

   PDF

2. Part 1: Quality of Mixing

   1. Front Matter

      Pages 1-1

      PDF

   2. The Variance as Measured Variable for the Evaluation of a Mixing Process or for the Comparison of Mixtures and Mixers

      • Karl Sommer

      Pages 3-15

   3. Evaluating the Quality of a Mixture: Degree of Homogeneity and Scale of Segregation

      • Dieter Bothe

      Pages 17-35

3. Part 2: Experimental Methods for Visualization and Measurements in Macro- and Micro-Scale Dimensions of Mixing

   1. Front Matter

      Pages 37-37

      PDF

   2. Time-Resolved Measurement of Concentrations in Mixing Processes Using Raman Spectroscopy

      • Birgit Jendrzok, Christoph Pauls, Hans-Jürgen Koß, Klaus Lucas

      Pages 39-53

   3. Measurements of Macro- and Micro-scale Mixing by Two-Colour Laser Induced Fluorescence

      • Kerstin Kling, Dieter Mewes

      Pages 55-67

   4. Analysis of Macro- and Micromixing in Laminar Stirred Mixing Vessels Using Laser Optical and Numerical Methods

      • Martin Faes, Birgit Glasmacher

      Pages 69-86

   5. Experimental Investigation of the Mixing-Process in a Jet-in-Crossflow Arrangement by Simultaneous 2d-LIF and PIV

      • Camilo Cárdenas, Rainer Suntz, Henning Bockhorn

      Pages 87-103

   6. Characterization of Micro Mixing for Precipitation of Nanoparticles in a T-Mixer

      • Johannes Gradl, Wolfgang Peukert

      Pages 105-124

   7. Mixing in Taylor-Couette Flow

      • Anna Racina, Zhen Liu, Matthias Kind

      Pages 125-139

4. Part 3: Theoretical Methods for Modelling and Numerical Calculations of Mixing Processes

   1. Front Matter

      Pages 141-141

      PDF

   2. Direct Numerical Simulation, Analysis and Modelling of Mixing Processes in a Round Jet in Crossflow

      • Jordan A. Denev, Jochen Fröhlich, Carlos J. Falconi, Henning Bockhorn

      Pages 143-164

   3. Analysis of Mixing Processes in Jet Mixers Using LES under Consideration of Heat Transfer and Chemical Reaction

      • Egon Hassel, Nikolai Kornev, Valery Zhdanov, Andrei Chorny, Matthias Walter

      Pages 165-184

   4. Formulation and Validation of an LES Model for Ternary Mixing and Reaction Based on Joint Presumed Discrete Distributions

      • Frank Victor Fischer, Wolfgang Polifke

      Pages 185-204

   5. Mixing Analysis and Optimization in Jet Mixer Systems by Means of Large Eddy Simulation

      • Pradeep Pantangi, Ying Huai, Amsini Sadiki

      Pages 205-226

   6. Experimental Investigation of a Static Mixer for Validation of Numerical Simulations

      • Andreas Lehwald, Stefan Leschka, Dominique Thévenin, Katharina Zähringer

      Pages 227-243

   7. Simulation of Flow and Transport in a Static Mixer Using Adaptive and Higher Order Numerical Methods

      • Vadym Aizinger, Andreas Hauser, Gabriel Wittum

      Pages 245-262

5. Part 4: Macro- and Micro-Mixing in Micro Channel Flow

   1. Front Matter

      Pages 263-263

      PDF

   2. Computational Analysis of Reactive Mixing in T-Microreactors

      • Dieter Bothe, Alexander Lojewski, Hans-Joachim Warnecke

      Pages 265-286

The homogenization of single phase gases or liquids with chemical reactive components by mixing belongs to one of the oldest basic operations applied in chemical engineering. The mixing process is used as an essential step in nearly all processes of the chemical industry as well as the pharmaceutical and food ind- tries. Recent experimentally and theoretically based results from research work lead to a fairly good prediction of the velocity fields in differend kinds of mixers, where as predictions of simultaneously proceeding homogeneous chemical re- tions, are still not reliable in a similar way. Therefore the design of equipment for mixing processes is still derived from measurements of the so called “mixing time” which is related to the applied methods of measurement and the special - sign of the test equipment itself. The cooperation of 17 research groups was stimulated by improved modern methods for experimental research and visualization, for simulations and nume- cal calculations of mixing and chemical reactions in micro and macro scale of time and local coordinates. The research work was financed for a six years period within the recently finished Priority Program of the German Research Foundation (DFG) named “Analysis, modeling and numerical prediction of flow-mixig with and without chemical reactions (SPP 1141)”. The objective of the investigations was to improve the prediction of efficiencies and selectivities of chemical re- tions on macroscopic scale.

• Large Eddy Simulation
• RSI
• experiments
• modeling
• multiphase flow
• numerical computation
• simulation

• Inst. Technische Chemie und Polymerchemie, Universität Karlsruhe, Karlsruhe, Germany

  Henning Bockhorn

• Inst. Mehrphasenprozesse, Universität Hannover, Hannover, Germany

  Dieter Mewes

• LS für Feststoff- und Grenzflächenverfahrenstechnik, Universität Erlangen-Nürnberg, Erlangen, Germany

  Wolfgang Peukert

• Fak. Naturwissenschaften FG Technische Chemie, Universität Paderborn, Paderborn, Germany

  Hans-Joachim Warnecke

Policies and ethics